Energy Supply to Buses on a Conductive Electric Road: An Evaluation of Charger Topologies and Electric Road Characteristics

An electric road system (ERS) enables transfer of electric energy to a moving vehicle, making it possible to reduce the capacity—and cost—of the battery and the need for static chargers. A conductive electric road allows for relatively low complexity whilst being able to provide high levels of power...

Full description

Saved in:
Bibliographic Details
Published in:World electric vehicle journal 2021-12, Vol.12 (4), p.241
Main Authors: Karlsson, Anton, Alaküla, Mats
Format: Article
Language:English
Subjects:
Automobiles
Batteries
Charging
Dynamic charging
Electric vehicles
Electronic equipment
Energy consumption
Engineering and Technology
Farkostteknik
Galvanic isolation
Integrated charging
Localization
Maskinteknik
Mechanical Engineering
Power consumption
Powertrain
Roads
Roads & highways
Safety
Teknik
Topology
Vehicle Engineering
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An electric road system (ERS) enables transfer of electric energy to a moving vehicle, making it possible to reduce the capacity—and cost—of the battery and the need for static chargers. A conductive electric road allows for relatively low complexity whilst being able to provide high levels of power. When utilising a conductive electric road, safety precautions must be considered with regard to isolation between the charging supply (the electric road) and the vehicle’s traction voltage system (TVS), since no protective Earth connection can be guaranteed. Isolation can be achieved by separating the two systems galvanically or by double isolating the entire TVS and all equipment connected to it on-board the vehicle. This study used the experimental results from a previous paper to model and evaluate three different electric powertrains/charger topologies, including a novel integrated design fulfilling the required safety features. The models were used in a full vehicle model and further investigated in a city bus scenario in terms of how charging performance, energy consumption and battery ageing are affected by the aforementioned charging topologies and electric road characteristic. We discovered that charging topology has a strong influence on energy consumption, and that electric road characteristics have a strong influence on battery ageing.
ISSN:2032-6653
2032-6653
DOI:10.3390/wevj12040241